As a food, fungus has no efficacy or effect, but it can supplement the body with nutrients such as dietary fiber, vitamins and minerals. If you are allergic to fungus, it is prohibited. Mullein is a fungal food that is rich in nutrients such as dietary fiber, vitamins and minerals, and also contains protein and a small amount of fat. Among them, dietary fiber helps promote gastrointestinal motility and prevent or relieve constipation. Mullein also contains vitamins B₁, B₂ and vitamin C, as well as iron, calcium, phosphorus and other mineral elements, which help to maintain a variety of metabolic reactions. In addition, iron is one of the raw materials for the formation of hemoglobin, and calcium is good for bone development and growth. However, it should be noted that if you are allergic to fungus, it should be prohibited; soaked fungus should be consumed within 24 hours to avoid the production of toxic and harmful substances.